<template>
    <el-menu default-active="1-4-1" class="el-menu-vertical-demo" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b" @open="handleOpen" @close="handleClose" :collapse="isCollapse">
      <h3 >{{isCollapse ? '后台' : '通用后台管理系统'}}</h3>
  <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :index="item.path + ''" :key="item.path">
    <i :class="'el-icon-'+item.icon"></i>
    <span slot="title">{{item.label}}</span>
  </el-menu-item>
  <el-submenu v-for="item in hasChildren" :index="item.path + ''" :key="item.path">
    <template slot="title">
      <i :class="'el-icon-'+item.icon"></i>
      
      <span slot="title">{{item.label}}</span>
    </template>
    <el-menu-item-group v-for="(subItem , subIndex) in item.children" :key="subItem.path">
      <el-menu-item @click="clickMenu(subItem)" :index="subIndex + ''">{{subItem.label}}</el-menu-item>
    </el-menu-item-group>
</el-submenu>
</el-menu>
</template>

<style lang="less" scoped>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
  }
  .el-menu {
    height: 100%;
    border: none;
    h3 {
      color: #fff;
      text-align:center;
      line-height:48px
    }
  }


</style>

<script>
  export default {
    data() {
      return {
        // isCollapse: true,
        menu:[  
        {
            path:'/',
            name:'home',
            label:'首页',
            ison:'s-home',
            url:'Home/Home'
        },
        {
            path:'/mall',
            name:'mall',
            label:'商品管理',
            ison:'video-play',
            url:'MallManage'
        },
        {
            path:'/user',
            name:'user',
            label:'用户管理',
            ison:'s-home',
            url:'Usermanage/Usermanage'
        },
        {
            label:'娱乐天地',
            ison:'location',
            children:[
            {
                
                path:'/page1',
                name:'page1',
                label:'物语',
                ison:'setting',
                url:'Other/PageOne'
                },
                {
                path:'/page2',
                name:'page2',
                label:'小游戏',
                ison:'setting',
                url:'Other/PageTwo'
                },
            ]
        }
  ]
 };
    },
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      },
      clickMenu(item){
        this.$router.push({
          name:item.name
        })
        this.$store.commit('selectMenu', item)
      }
    },
    computed: {
        noChildren(){
            return this.menu.filter(item => !item.children)
        },
        hasChildren(){
            return this.menu.filter(item => item.children)
        },
        isCollapse(){
          return this.$store.state.tab.isCollapse
        }

    }
  }
</script>